Carton



w. PFUNDSTEIN ET AL 2.179.830

CARTON wv., Mr, `ll939.

Filed Oct. 26, 1938 2 Sheets-Sheet l I Q/m/ fr 56977/ NOV- 14, T1939- w. PFUNDSTEIN ET AL 2179830 CARTON 2 Sheets-Sheet 2 Filed Oct. 26. 1938 @/Qlma @757i 76%/ Patented Nov. 14, 1939 UNITED STATES PATENT OFFICE CARTON Wayne Pfundstein and Odell Wilson, Chicago, Ill. Application october 26, 193s, serial No. 236,994

2 claims. (o1. 229-31) Our invention relates to a carton made of cardboard or the like for holding popcorn, salads, and a number of other commodities.

Among the objects of our invention is to create a carton having reinforced portions and therefore greater strength; to provide a carton adapted to stand upright without the need of extraneous devices; to supply a carton which is substantially leakproof and particularly are unweakened at points of unusual wear and therefore are stronger and leak proof. When the blank is later folded inwardly on scores I4, I5, I6 and I1 sections 21, 28, 29, 30 and 3| are formed in the rib I3. Extendinglongitudinally from score I2 are spaced slits 32, 33, 34 and 35 continuing on down-to the lower end of the blank I0. Said slits 32, 33, 34 and 35 form sections 36, 31, 38, 39 and 40. Slit 32 is cut out of 10 adapted for serniwet foods such as salads; to the inner side edge of section 36. Slits 33 and create a carton in which no glue is needed for 34 are cut out of opposite side edges of section 38. the top or bottom and which has members that Slit 35 is cut out of the inner side edge of secare adapted to snap into place and remain in tion 4I). Sections 31 and 39 are not cut away position, and such other objects and advantages and remain at their full original size.

and capabilities as will later more fully appear In forming our carton the blank Ill is bent and which are inherently possessed by our inwardly on score II and outwardly on score invention. I2 so that rib I3 rests against the lower ends of While We have disclosed herein preferred emsections I8, I9, 20, 2| and 22. The blank I0 bodiments of our invention, yet We wish it underis then bent inwardly on score I5. Glue or other stood that the same are merely illustrative and suitable adhesive is then applied longitudinally are susceptible of modification and change withalong the outer portions of sections 22 and 40. out departing from the spirit of our invention. The blank I 0 is folded inwardly on score I1 Referring to the drawings, Fig. 1 is a plan and glued strip 4I is pressed down on the outer view of a blank for our carton with an open side of sections I8 and 36 and section 3| of rib g5 top; Fig. 2 is an edge view illustrating the rib I3 is tucked under section 21. The carton is in folded position; Fig. 3 is a plan view partially shipped this way, as shown in Fig. 5. Our carin perspective illustrating the rst steps in the ton maybe formed with slight variation by foldfolding of our blank to form our carton; Fig. 4 ing inwardly first on score I5. The glued strip is a detail view illustrating the interfolding of 4| may then be applied to the outer portions of the rib portions; Fig. 5 is a plan View of the sections 22, 3| and 40. The blank IIJ is then form in which our carton is delivered to prosfolded inwardly on score II, outwardly on score pective users; Fig. 6 illustrates the position of I2 and inwardly on score I1. Section 3| of rib our carton when the first of the four flaps has I3 is tucked under section 21, and the glued strip been folded into position; Figs. 7, 8 and 9 show the 4I is pressed against the outer portions of secfolding of the second, third and fourth aps in tions I8 and 36.

position; Fig. 10 is a detail view of the end of When our carton is desired for use the carthe carton with the last flap about to be snapped ton is opened up by bending inwardly on scores into position; Fig. 11 is a plan View of a blank I4 and I5. Section 31 is folded inwardly, follor our carton having both closed bottom and lowed next by section 38 and then by sections 40 top. 36 and 40 which are now glued together to form Referring more particularly t0 the embOdia single section. The last section tobe bent in: ments selected to illustrate our invention, it comwardly is section 39. The outer side of section prises a blank I0 substantially rectangular in 28 may have a slit 42 so as to prevent the accishape. An interrupted lateral score II extends dental opening of section 39. It will be noted acrossthe face of blank I0. Another lateral that when section or flap 31 is bent inwardly score I2 spaced a short distance below score II it folds into the recess formed by rib I3 and extends across the under-side of the blank II) rests against rib I3. Flap '31 not having been and folds outwardly forming a rib or fold I3. cut down in size to provide slits 32 or 33 ts tight A plurality of spaced longitudinal scores I4, I5, against the inner walls and is prevented from I6 and I1 extend from the upper end of the accidental engagement for friction grip thereon.

blank I0 and end slightly short of score II form Flaps or sections 38 and 38 and 4I) being smalling sections I8, I9, 20, 2| and 22. Since longier fit easily within the recess. The last flap tudinal scores I4, I5, I6 and I1 do not meet or Vor section 39 like section 31 is of full size and cross lateral score II the portions 23, 24, 25 and fits against the inner side walls of the recess 2B, Where these scores would meet if continued, by friction grip. The carton thus formed can f stand erect without the need of extraneous means. A ap 43 extending outwardly from the glued strip 4I on section 22 provides means for the removable insertion of a napkin or the like.

When it is desired to have a closed top we may provide a larger blank having on its face an interrupted score 44 at the upper ends of sections I8, I9, 20, 2| and 22. Spaced above score 44 is an outwardly creased score 45. This forms a rib orfold 46. The longitudinal extending scores I4, I5, I6 and I1 extend almost to lateral score 44. Unweakened spaces.65, 66, 61 and 58 are left between longitudinal scores I4, I5, I5 and l1 and interrupted lateral score 44. When the blank is bent inwardly at a later time on longitudinal scores I4, I5, I6 and I1, sections 49, 50, 5I, 52 and 53 are formed in rib 46. Above rib 48 and from score 45 spaced slits 54, 55, 56 and 51 extend longitudinally to the upper edge of the blank, forming sections 58, 59, 60, 5I and 62. Slit 54 is cut out of the inside potion of section 58. Slits 55 and 56 are cut out of opposite side portions of section 60. Slit 51 is cut'fout of the inner side of section 62. Sections 59 and 6I are not cut away and remain at their full original size. The folding of this top portion follows the same procedure as the folding of the bottom heretofore described.

Where it is desired to have a simple closure instead of a set in top formation as above described, the rib 46 may be omitted. In this type of closure two or more of the aps may have cut out portions and tongues for inter-engagement so as to retain the top in closed position.

Having thus described our invention, claim:

1. A carton formed of a single blank composing a body portion having spaced longitudinal scores to form the sidewalls of the carton, one of the side walls formed by overlapping opposite edges of the body member, a rib portion formed by a pair of spaced lateral scores adjacent one end of the body member, said rib portion folded so as to Contact the side walls on the inside of the carton, that portion of the rib on the top portion of the overlapping side wall being folded under the portion of the rib on the bottom portion of the underlapping side wall so as to provide a sealed leak proof connection, said overlapping portions of the side walls held together by adhesive means, and a closure portion divided into a plurality of flaps by spaced longitudinal slits, said naps adapted to fold inwardly to form a closed end for said carton.

2. In a carton formed of a single blank, said blank having an interrupted lateral score', o. plurality of longitudinal scores extending from the upper edge of the blank and ending short of the lateral score, said lateral score interrupted short of each longitudinal score so as to leave unweakened po'rtions between the scores so that when the blank is folded on the scores to form the side walls of the carton, holes caused by folding on the meeting places of scores are prevented.

WAYNE PFUNDSTEIN. ODELL WILSON. 

